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I purchased a summer wave above ground 18 foot by 42 inch pool. I filled the pool and took the water to my local pool store. Ph 7.5 Free chlorine 0.9 Total alkalinity 92 Total chlorine 1 TDS 100 Calcium hardness 97 CYA 2 Optimizer 13 Phosphate 0 He first told me to add 4.5lbs of balance pak...